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Finding the Fourth Proportional to 283,317.44, 390,981.12 and 154,256.80

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Solution

The fourth proportional to 283,317.44, 390,981.12 and 154,256.80 is: 212,876.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,317.44 : 390,981.12 = 154,256.80 : x
  2. Step 2: Convert to fraction form
    283,317.44/390,981.12 = 154,256.80/x
  3. Step 3: Cross multiply
    283,317.44x = 390,981.12 × 154,256.80
  4. Step 4: Simplify right side
    283,317.44x = 60,311,496,431.62
  5. Step 5: Solve for x
    x = 60,311,496,431.62/283,317.44
  6. Step 6: Final answer
    x = 212,876.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.